It already was done before (Toban Raceway) and i want to know how to do it! I have all the textures, gmts and fbx files to do it, i just dont know how
Import parts of the map as dae files, It's really easy. If it is a really small map, you might be lucky and be able to import the map in one peice. Also, if you don't know how to import dae files, take a look at this video: That is pretty much what I'm doing with Circuit de la Sarthe which was originally from rfactor. If you want to make it good quality and/ or release it, just importing the dae files and leaving the map that way won't work. There will be many edits to the map to make.